In vitro efficacy of several disinfectants against Salmonella enterica serovar Enteritidis and Escherichia coli strains from poultry

Abstract

The efficacy of 28 individual or blended disinfectants against avian Salmonella enterica serovar Enteritidis and Escherichia coli strains was determined. An in vitro test in the presence and absence of serum as source of organic material was conducted. Povidone-iodine (releasing 1% available iodine), 1% potassium permanganate, 70% ethanol, 2% chlorhexidine digluconate and three commercial formulations based on quaternary ammonium compounds + formaldehyde or cresol derivates were the most effective against all strains tested and reduced bacterial counts by more than 106 times (6-log10) regardless of the presence of organic matter. These commercial compounds as well as ethanol and chlorhexidine among the individual substances tested might be helpful in the adoption of environmental control measures against these two enterobacteria in poultry industry.

Disinfectant and Antimicrobial Susceptibility Profiles of Salmonella Strains from Feedlot Water-Sprinkled Cattle: Hides and Feces

“…The highest MIC level observed here was in the range of levels previously observed in clinical Salmonella Typhimurium (8-16 µg/mL) isolates [55]. But the MIC values for chlorhexidine were lower than many disinfectants, which was in agreement with a study of a S. enterica serovar Enteritidis isolate [52].…”

“…But lower levels of formaldehyde or the benzyl compounds were not effective. This is in agreement with a study of a S. enterica serovar Enteritidis field isolate [52]. All 145 Salmonella strains were susceptible to triclosan.…”

Preharvest Salmonella Risk Contamination and the Control Strategies

“…Higher doses should be used. Povidone-iodine, potassium permanganate, ethanol, chlorhexidine digluconate, and hydrogen peroxide exhibited high efficacy in other studies [49,50].…”

Evaluation of the efficiency of the most common commercial disinfectants against some pathogens isolated from New-valley poultry farms "in-vitro studies."

“…Moreover, Kamal et al (2019) showed that some microorganisms as E. coli and Salmonella were able to survive and detected in the environmental samples after disinfection. Results in tables (2-5) revealed that E. coli is the most resistant organism against all the tested disinfectants Martínez-Martínez et al (2016) stated that Virkon-S is not able to inactivate E. coli.…”